2007-09-23 07:34:23 +00:00
|
|
|
/*-
|
2017-11-27 15:37:16 +00:00
|
|
|
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
|
|
|
|
*
|
2007-09-23 07:34:23 +00:00
|
|
|
* Copyright (c) 2005 Ivan Voras <ivoras@freebsd.org>
|
|
|
|
*
|
|
|
|
* Redistribution and use in source and binary forms, with or without
|
|
|
|
* modification, are permitted provided that the following conditions
|
|
|
|
* are met:
|
|
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
|
|
* notice, this list of conditions and the following disclaimer.
|
|
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
|
|
* documentation and/or other materials provided with the distribution.
|
|
|
|
*
|
|
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
|
|
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
|
|
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
|
|
* SUCH DAMAGE.
|
|
|
|
*/
|
|
|
|
|
|
|
|
#include <sys/cdefs.h>
|
|
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
|
|
|
|
#include <sys/param.h>
|
|
|
|
#include <errno.h>
|
|
|
|
#include <paths.h>
|
|
|
|
#include <stdio.h>
|
|
|
|
#include <stdlib.h>
|
|
|
|
#include <stdint.h>
|
|
|
|
#include <string.h>
|
|
|
|
#include <strings.h>
|
|
|
|
#include <fcntl.h>
|
|
|
|
#include <unistd.h>
|
|
|
|
#include <libgeom.h>
|
|
|
|
#include <err.h>
|
|
|
|
#include <assert.h>
|
|
|
|
|
|
|
|
#include <core/geom.h>
|
|
|
|
#include <misc/subr.h>
|
|
|
|
|
|
|
|
#include <geom/virstor/g_virstor_md.h>
|
|
|
|
#include <geom/virstor/g_virstor.h>
|
|
|
|
|
|
|
|
uint32_t lib_version = G_LIB_VERSION;
|
|
|
|
uint32_t version = G_VIRSTOR_VERSION;
|
2010-09-13 13:48:18 +00:00
|
|
|
|
|
|
|
#define GVIRSTOR_CHUNK_SIZE "4M"
|
|
|
|
#define GVIRSTOR_VIR_SIZE "2T"
|
2007-09-23 07:34:23 +00:00
|
|
|
|
|
|
|
#if G_LIB_VERSION == 1
|
|
|
|
/* Support RELENG_6 */
|
|
|
|
#define G_TYPE_BOOL G_TYPE_NONE
|
|
|
|
#endif
|
|
|
|
|
|
|
|
/*
|
|
|
|
* virstor_main gets called by the geom(8) utility
|
|
|
|
*/
|
|
|
|
static void virstor_main(struct gctl_req *req, unsigned flags);
|
|
|
|
|
|
|
|
struct g_command class_commands[] = {
|
2010-09-13 13:48:18 +00:00
|
|
|
{ "clear", G_FLAG_VERBOSE, virstor_main, G_NULL_OPTS,
|
|
|
|
"[-v] prov ..."
|
2007-09-23 07:34:23 +00:00
|
|
|
},
|
2010-09-13 13:48:18 +00:00
|
|
|
{ "dump", 0, virstor_main, G_NULL_OPTS,
|
|
|
|
"prov ..."
|
2007-09-23 07:34:23 +00:00
|
|
|
},
|
2010-09-13 13:48:18 +00:00
|
|
|
{ "label", G_FLAG_VERBOSE | G_FLAG_LOADKLD, virstor_main,
|
|
|
|
{
|
|
|
|
{ 'h', "hardcode", NULL, G_TYPE_BOOL},
|
|
|
|
{ 'm', "chunk_size", GVIRSTOR_CHUNK_SIZE, G_TYPE_NUMBER},
|
|
|
|
{ 's', "vir_size", GVIRSTOR_VIR_SIZE, G_TYPE_NUMBER},
|
|
|
|
G_OPT_SENTINEL
|
|
|
|
},
|
|
|
|
"[-h] [-v] [-m chunk_size] [-s vir_size] name provider0 [provider1 ...]"
|
2007-09-23 07:34:23 +00:00
|
|
|
},
|
2010-09-13 13:48:18 +00:00
|
|
|
{ "destroy", G_FLAG_VERBOSE, NULL,
|
|
|
|
{
|
|
|
|
{ 'f', "force", NULL, G_TYPE_BOOL},
|
|
|
|
G_OPT_SENTINEL
|
|
|
|
},
|
|
|
|
"[-fv] name ..."
|
2007-09-23 07:34:23 +00:00
|
|
|
},
|
2010-09-13 13:48:18 +00:00
|
|
|
{ "stop", G_FLAG_VERBOSE, NULL,
|
|
|
|
{
|
|
|
|
{ 'f', "force", NULL, G_TYPE_BOOL},
|
|
|
|
G_OPT_SENTINEL
|
|
|
|
},
|
|
|
|
"[-fv] name ... (alias for \"destroy\")"
|
2007-09-23 07:34:23 +00:00
|
|
|
},
|
2010-09-13 13:48:18 +00:00
|
|
|
{ "add", G_FLAG_VERBOSE, NULL,
|
|
|
|
{
|
|
|
|
{ 'h', "hardcode", NULL, G_TYPE_BOOL},
|
|
|
|
G_OPT_SENTINEL
|
|
|
|
},
|
|
|
|
"[-vh] name prov [prov ...]"
|
2007-09-23 07:34:23 +00:00
|
|
|
},
|
2010-09-13 13:48:18 +00:00
|
|
|
{ "remove", G_FLAG_VERBOSE, NULL, G_NULL_OPTS,
|
|
|
|
"[-v] name ..."
|
2007-09-23 07:34:23 +00:00
|
|
|
},
|
|
|
|
G_CMD_SENTINEL
|
|
|
|
};
|
|
|
|
|
|
|
|
static int verbose = 0;
|
|
|
|
|
|
|
|
/* Helper functions' declarations */
|
|
|
|
static void virstor_clear(struct gctl_req *req);
|
|
|
|
static void virstor_dump(struct gctl_req *req);
|
|
|
|
static void virstor_label(struct gctl_req *req);
|
|
|
|
|
|
|
|
/* Dispatcher function (no real work done here, only verbose flag recorder) */
|
|
|
|
static void
|
|
|
|
virstor_main(struct gctl_req *req, unsigned flags)
|
|
|
|
{
|
|
|
|
const char *name;
|
|
|
|
|
|
|
|
if ((flags & G_FLAG_VERBOSE) != 0)
|
|
|
|
verbose = 1;
|
|
|
|
|
|
|
|
name = gctl_get_ascii(req, "verb");
|
|
|
|
if (name == NULL) {
|
|
|
|
gctl_error(req, "No '%s' argument.", "verb");
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
if (strcmp(name, "label") == 0)
|
|
|
|
virstor_label(req);
|
|
|
|
else if (strcmp(name, "clear") == 0)
|
|
|
|
virstor_clear(req);
|
|
|
|
else if (strcmp(name, "dump") == 0)
|
|
|
|
virstor_dump(req);
|
|
|
|
else
|
|
|
|
gctl_error(req, "%s: Unknown command: %s.", __func__, name);
|
|
|
|
|
|
|
|
/* No CTASSERT in userland
|
|
|
|
CTASSERT(VIRSTOR_MAP_BLOCK_ENTRIES*VIRSTOR_MAP_ENTRY_SIZE == MAXPHYS);
|
|
|
|
*/
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Labels a new geom Meaning: parses and checks the parameters, calculates &
|
|
|
|
* writes metadata to the relevant providers so when the next round of
|
|
|
|
* "tasting" comes (which will be just after the provider(s) are closed) geom
|
|
|
|
* can be instantiated with the tasted metadata.
|
|
|
|
*/
|
|
|
|
static void
|
|
|
|
virstor_label(struct gctl_req *req)
|
|
|
|
{
|
|
|
|
struct g_virstor_metadata md;
|
|
|
|
off_t msize;
|
|
|
|
unsigned char *sect;
|
|
|
|
unsigned int i;
|
|
|
|
size_t ssize, secsize;
|
|
|
|
const char *name;
|
|
|
|
char param[32];
|
|
|
|
int hardcode, nargs, error;
|
|
|
|
struct virstor_map_entry *map;
|
|
|
|
size_t total_chunks; /* We'll run out of memory if
|
|
|
|
this needs to be bigger. */
|
|
|
|
unsigned int map_chunks; /* Chunks needed by the map (map size). */
|
|
|
|
size_t map_size; /* In bytes. */
|
|
|
|
ssize_t written;
|
|
|
|
int fd;
|
|
|
|
|
|
|
|
nargs = gctl_get_int(req, "nargs");
|
|
|
|
if (nargs < 2) {
|
|
|
|
gctl_error(req, "Too few arguments (%d): expecting: name "
|
|
|
|
"provider0 [provider1 ...]", nargs);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
hardcode = gctl_get_int(req, "hardcode");
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Initialize constant parts of metadata: magic signature, version,
|
|
|
|
* name.
|
|
|
|
*/
|
|
|
|
bzero(&md, sizeof(md));
|
|
|
|
strlcpy(md.md_magic, G_VIRSTOR_MAGIC, sizeof(md.md_magic));
|
|
|
|
md.md_version = G_VIRSTOR_VERSION;
|
|
|
|
name = gctl_get_ascii(req, "arg0");
|
|
|
|
if (name == NULL) {
|
|
|
|
gctl_error(req, "No 'arg%u' argument.", 0);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
strlcpy(md.md_name, name, sizeof(md.md_name));
|
|
|
|
|
|
|
|
md.md_virsize = (off_t)gctl_get_intmax(req, "vir_size");
|
|
|
|
md.md_chunk_size = gctl_get_intmax(req, "chunk_size");
|
|
|
|
md.md_count = nargs - 1;
|
|
|
|
|
|
|
|
if (md.md_virsize == 0 || md.md_chunk_size == 0) {
|
|
|
|
gctl_error(req, "Virtual size and chunk size must be non-zero");
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (md.md_chunk_size % MAXPHYS != 0) {
|
|
|
|
/* XXX: This is not strictly needed, but it's convenient to
|
|
|
|
* impose some limitations on it, so why not MAXPHYS. */
|
2016-05-01 02:24:05 +00:00
|
|
|
size_t new_size = rounddown(md.md_chunk_size, MAXPHYS);
|
2007-09-23 07:34:23 +00:00
|
|
|
if (new_size < md.md_chunk_size)
|
|
|
|
new_size += MAXPHYS;
|
|
|
|
fprintf(stderr, "Resizing chunk size to be a multiple of "
|
|
|
|
"MAXPHYS (%d kB).\n", MAXPHYS / 1024);
|
|
|
|
fprintf(stderr, "New chunk size: %zu kB\n", new_size / 1024);
|
|
|
|
md.md_chunk_size = new_size;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (md.md_virsize % md.md_chunk_size != 0) {
|
|
|
|
off_t chunk_count = md.md_virsize / md.md_chunk_size;
|
|
|
|
md.md_virsize = chunk_count * md.md_chunk_size;
|
|
|
|
fprintf(stderr, "Resizing virtual size to be a multiple of "
|
|
|
|
"chunk size.\n");
|
|
|
|
fprintf(stderr, "New virtual size: %zu MB\n",
|
|
|
|
(size_t)(md.md_virsize/(1024 * 1024)));
|
|
|
|
}
|
|
|
|
|
2008-08-09 16:47:30 +00:00
|
|
|
msize = secsize = 0;
|
2007-09-23 07:34:23 +00:00
|
|
|
for (i = 1; i < (unsigned)nargs; i++) {
|
|
|
|
snprintf(param, sizeof(param), "arg%u", i);
|
2010-11-22 20:10:48 +00:00
|
|
|
name = gctl_get_ascii(req, "%s", param);
|
2007-09-23 07:34:23 +00:00
|
|
|
ssize = g_get_sectorsize(name);
|
|
|
|
if (ssize == 0)
|
|
|
|
fprintf(stderr, "%s for %s\n", strerror(errno), name);
|
|
|
|
msize += g_get_mediasize(name);
|
|
|
|
if (secsize == 0)
|
|
|
|
secsize = ssize;
|
|
|
|
else if (secsize != ssize) {
|
|
|
|
gctl_error(req, "Devices need to have same sector size "
|
|
|
|
"(%u on %s needs to be %u).",
|
|
|
|
(u_int)ssize, name, (u_int)secsize);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2008-08-09 16:47:30 +00:00
|
|
|
if (secsize == 0) {
|
|
|
|
gctl_error(req, "Device not specified");
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2007-09-23 07:34:23 +00:00
|
|
|
if (md.md_chunk_size % secsize != 0) {
|
|
|
|
fprintf(stderr, "Error: chunk size is not a multiple of sector "
|
|
|
|
"size.");
|
|
|
|
gctl_error(req, "Chunk size (in bytes) must be multiple of %u.",
|
|
|
|
(unsigned int)secsize);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
total_chunks = md.md_virsize / md.md_chunk_size;
|
|
|
|
map_size = total_chunks * sizeof(*map);
|
|
|
|
assert(md.md_virsize % md.md_chunk_size == 0);
|
|
|
|
|
|
|
|
ssize = map_size % secsize;
|
|
|
|
if (ssize != 0) {
|
|
|
|
size_t add_chunks = (secsize - ssize) / sizeof(*map);
|
|
|
|
total_chunks += add_chunks;
|
|
|
|
md.md_virsize = (off_t)total_chunks * (off_t)md.md_chunk_size;
|
|
|
|
map_size = total_chunks * sizeof(*map);
|
|
|
|
fprintf(stderr, "Resizing virtual size to fit virstor "
|
|
|
|
"structures.\n");
|
|
|
|
fprintf(stderr, "New virtual size: %ju MB (%zu new chunks)\n",
|
|
|
|
(uintmax_t)(md.md_virsize / (1024 * 1024)), add_chunks);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (verbose)
|
|
|
|
printf("Total virtual chunks: %zu (%zu MB each), %ju MB total "
|
|
|
|
"virtual size.\n",
|
|
|
|
total_chunks, (size_t)(md.md_chunk_size / (1024 * 1024)),
|
|
|
|
md.md_virsize/(1024 * 1024));
|
|
|
|
|
|
|
|
if ((off_t)md.md_virsize < msize)
|
|
|
|
fprintf(stderr, "WARNING: Virtual storage size < Physical "
|
|
|
|
"available storage (%ju < %ju)\n", md.md_virsize, msize);
|
|
|
|
|
|
|
|
/* Clear last sector first to spoil all components if device exists. */
|
|
|
|
if (verbose)
|
|
|
|
printf("Clearing metadata on");
|
|
|
|
|
|
|
|
for (i = 1; i < (unsigned)nargs; i++) {
|
|
|
|
snprintf(param, sizeof(param), "arg%u", i);
|
2010-11-22 20:10:48 +00:00
|
|
|
name = gctl_get_ascii(req, "%s", param);
|
2007-09-23 07:34:23 +00:00
|
|
|
|
|
|
|
if (verbose)
|
|
|
|
printf(" %s", name);
|
|
|
|
|
|
|
|
msize = g_get_mediasize(name);
|
|
|
|
ssize = g_get_sectorsize(name);
|
|
|
|
if (msize == 0 || ssize == 0) {
|
|
|
|
gctl_error(req, "Can't retrieve information about "
|
|
|
|
"%s: %s.", name, strerror(errno));
|
|
|
|
return;
|
|
|
|
}
|
2007-11-18 03:17:56 +00:00
|
|
|
if (msize < (off_t) MAX(md.md_chunk_size*4, map_size))
|
2007-09-23 07:34:23 +00:00
|
|
|
gctl_error(req, "Device %s is too small", name);
|
|
|
|
error = g_metadata_clear(name, NULL);
|
|
|
|
if (error != 0) {
|
|
|
|
gctl_error(req, "Can't clear metadata on %s: %s.", name,
|
|
|
|
strerror(error));
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* Write allocation table to the first provider - this needs to be done
|
|
|
|
* before metadata is written because when kernel tastes it it's too
|
|
|
|
* late */
|
|
|
|
name = gctl_get_ascii(req, "arg1"); /* device with metadata */
|
|
|
|
if (verbose)
|
|
|
|
printf(".\nWriting allocation table to %s...", name);
|
|
|
|
|
|
|
|
/* How many chunks does the map occupy? */
|
|
|
|
map_chunks = map_size/md.md_chunk_size;
|
|
|
|
if (map_size % md.md_chunk_size != 0)
|
|
|
|
map_chunks++;
|
|
|
|
if (verbose) {
|
|
|
|
printf(" (%zu MB, %d chunks) ", map_size/(1024*1024), map_chunks);
|
|
|
|
fflush(stdout);
|
|
|
|
}
|
|
|
|
|
2010-10-09 20:20:27 +00:00
|
|
|
if (strncmp(name, _PATH_DEV, sizeof(_PATH_DEV) - 1) == 0)
|
2007-09-23 07:34:23 +00:00
|
|
|
fd = open(name, O_RDWR);
|
|
|
|
else {
|
|
|
|
sprintf(param, "%s%s", _PATH_DEV, name);
|
|
|
|
fd = open(param, O_RDWR);
|
|
|
|
}
|
|
|
|
if (fd < 0)
|
|
|
|
gctl_error(req, "Cannot open provider %s to write map", name);
|
|
|
|
|
|
|
|
/* Do it with calloc because there might be a need to set up chunk flags
|
|
|
|
* in the future */
|
|
|
|
map = calloc(total_chunks, sizeof(*map));
|
|
|
|
if (map == NULL) {
|
|
|
|
gctl_error(req,
|
|
|
|
"Out of memory (need %zu bytes for allocation map)",
|
|
|
|
map_size);
|
|
|
|
}
|
|
|
|
|
|
|
|
written = pwrite(fd, map, map_size, 0);
|
|
|
|
free(map);
|
|
|
|
if ((size_t)written != map_size) {
|
|
|
|
if (verbose) {
|
|
|
|
fprintf(stderr, "\nTried to write %zu, written %zd (%s)\n",
|
|
|
|
map_size, written, strerror(errno));
|
|
|
|
}
|
|
|
|
gctl_error(req, "Error writing out allocation map!");
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
close (fd);
|
|
|
|
|
|
|
|
if (verbose)
|
|
|
|
printf("\nStoring metadata on ");
|
|
|
|
|
|
|
|
/*
|
|
|
|
* ID is randomly generated, unique for a geom. This is used to
|
|
|
|
* recognize all providers belonging to one geom.
|
|
|
|
*/
|
|
|
|
md.md_id = arc4random();
|
|
|
|
|
|
|
|
/* Ok, store metadata. */
|
|
|
|
for (i = 1; i < (unsigned)nargs; i++) {
|
|
|
|
snprintf(param, sizeof(param), "arg%u", i);
|
2010-11-22 20:10:48 +00:00
|
|
|
name = gctl_get_ascii(req, "%s", param);
|
2007-09-23 07:34:23 +00:00
|
|
|
|
|
|
|
msize = g_get_mediasize(name);
|
|
|
|
ssize = g_get_sectorsize(name);
|
|
|
|
|
|
|
|
if (verbose)
|
|
|
|
printf("%s ", name);
|
|
|
|
|
|
|
|
/* this provider's position/type in geom */
|
|
|
|
md.no = i - 1;
|
|
|
|
/* this provider's size */
|
|
|
|
md.provsize = msize;
|
|
|
|
/* chunk allocation info */
|
|
|
|
md.chunk_count = md.provsize / md.md_chunk_size;
|
|
|
|
if (verbose)
|
|
|
|
printf("(%u chunks) ", md.chunk_count);
|
|
|
|
/* Check to make sure last sector is unused */
|
2010-11-22 20:10:48 +00:00
|
|
|
if ((off_t)(md.chunk_count * md.md_chunk_size) > (off_t)(msize-ssize))
|
2007-09-23 07:34:23 +00:00
|
|
|
md.chunk_count--;
|
|
|
|
md.chunk_next = 0;
|
|
|
|
if (i != 1) {
|
|
|
|
md.chunk_reserved = 0;
|
|
|
|
md.flags = 0;
|
|
|
|
} else {
|
|
|
|
md.chunk_reserved = map_chunks * 2;
|
|
|
|
md.flags = VIRSTOR_PROVIDER_ALLOCATED |
|
|
|
|
VIRSTOR_PROVIDER_CURRENT;
|
|
|
|
md.chunk_next = md.chunk_reserved;
|
|
|
|
if (verbose)
|
|
|
|
printf("(%u reserved) ", md.chunk_reserved);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!hardcode)
|
|
|
|
bzero(md.provider, sizeof(md.provider));
|
|
|
|
else {
|
|
|
|
/* convert "/dev/something" to "something" */
|
2010-10-09 20:20:27 +00:00
|
|
|
if (strncmp(name, _PATH_DEV, sizeof(_PATH_DEV) - 1) == 0) {
|
|
|
|
strlcpy(md.provider, name + sizeof(_PATH_DEV) - 1,
|
2007-09-23 07:34:23 +00:00
|
|
|
sizeof(md.provider));
|
|
|
|
} else
|
|
|
|
strlcpy(md.provider, name, sizeof(md.provider));
|
|
|
|
}
|
|
|
|
sect = malloc(ssize);
|
|
|
|
if (sect == NULL)
|
|
|
|
err(1, "Cannot allocate sector of %zu bytes", ssize);
|
2010-07-14 15:14:00 +00:00
|
|
|
bzero(sect, ssize);
|
2007-09-23 07:34:23 +00:00
|
|
|
virstor_metadata_encode(&md, sect);
|
2017-09-08 15:38:02 +00:00
|
|
|
error = g_metadata_store(name, sect, ssize);
|
2007-09-23 07:34:23 +00:00
|
|
|
free(sect);
|
|
|
|
if (error != 0) {
|
|
|
|
if (verbose)
|
|
|
|
printf("\n");
|
|
|
|
fprintf(stderr, "Can't store metadata on %s: %s.\n",
|
|
|
|
name, strerror(error));
|
|
|
|
gctl_error(req,
|
|
|
|
"Not fully done (error storing metadata).");
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
#if 0
|
|
|
|
if (verbose)
|
|
|
|
printf("\n");
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Clears metadata on given provider(s) IF it's owned by us */
|
|
|
|
static void
|
|
|
|
virstor_clear(struct gctl_req *req)
|
|
|
|
{
|
|
|
|
const char *name;
|
|
|
|
char param[32];
|
|
|
|
unsigned i;
|
|
|
|
int nargs, error;
|
|
|
|
int fd;
|
|
|
|
|
|
|
|
nargs = gctl_get_int(req, "nargs");
|
|
|
|
if (nargs < 1) {
|
|
|
|
gctl_error(req, "Too few arguments.");
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
for (i = 0; i < (unsigned)nargs; i++) {
|
|
|
|
snprintf(param, sizeof(param), "arg%u", i);
|
2010-11-22 20:10:48 +00:00
|
|
|
name = gctl_get_ascii(req, "%s", param);
|
2007-09-23 07:34:23 +00:00
|
|
|
|
|
|
|
error = g_metadata_clear(name, G_VIRSTOR_MAGIC);
|
|
|
|
if (error != 0) {
|
|
|
|
fprintf(stderr, "Can't clear metadata on %s: %s "
|
|
|
|
"(do I own it?)\n", name, strerror(error));
|
|
|
|
gctl_error(req,
|
|
|
|
"Not fully done (can't clear metadata).");
|
|
|
|
continue;
|
|
|
|
}
|
2010-10-09 20:20:27 +00:00
|
|
|
if (strncmp(name, _PATH_DEV, sizeof(_PATH_DEV) - 1) == 0)
|
2007-09-23 07:34:23 +00:00
|
|
|
fd = open(name, O_RDWR);
|
|
|
|
else {
|
|
|
|
sprintf(param, "%s%s", _PATH_DEV, name);
|
|
|
|
fd = open(param, O_RDWR);
|
|
|
|
}
|
|
|
|
if (fd < 0) {
|
|
|
|
gctl_error(req, "Cannot clear header sector for %s",
|
|
|
|
name);
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
if (verbose)
|
|
|
|
printf("Metadata cleared on %s.\n", name);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Print some metadata information */
|
|
|
|
static void
|
|
|
|
virstor_metadata_dump(const struct g_virstor_metadata *md)
|
|
|
|
{
|
|
|
|
printf(" Magic string: %s\n", md->md_magic);
|
|
|
|
printf(" Metadata version: %u\n", (u_int) md->md_version);
|
|
|
|
printf(" Device name: %s\n", md->md_name);
|
|
|
|
printf(" Device ID: %u\n", (u_int) md->md_id);
|
|
|
|
printf(" Provider index: %u\n", (u_int) md->no);
|
|
|
|
printf(" Active providers: %u\n", (u_int) md->md_count);
|
|
|
|
printf(" Hardcoded provider: %s\n",
|
|
|
|
md->provider[0] != '\0' ? md->provider : "(not hardcoded)");
|
|
|
|
printf(" Virtual size: %u MB\n",
|
|
|
|
(unsigned int)(md->md_virsize/(1024 * 1024)));
|
|
|
|
printf(" Chunk size: %u kB\n", md->md_chunk_size / 1024);
|
|
|
|
printf(" Chunks on provider: %u\n", md->chunk_count);
|
|
|
|
printf(" Chunks free: %u\n", md->chunk_count - md->chunk_next);
|
|
|
|
printf(" Reserved chunks: %u\n", md->chunk_reserved);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Called by geom(8) via gvirstor_main() to dump metadata information */
|
|
|
|
static void
|
|
|
|
virstor_dump(struct gctl_req *req)
|
|
|
|
{
|
|
|
|
struct g_virstor_metadata md;
|
|
|
|
u_char tmpmd[512]; /* temporary buffer */
|
|
|
|
const char *name;
|
|
|
|
char param[16];
|
|
|
|
int nargs, error, i;
|
|
|
|
|
|
|
|
assert(sizeof(tmpmd) >= sizeof(md));
|
|
|
|
|
|
|
|
nargs = gctl_get_int(req, "nargs");
|
|
|
|
if (nargs < 1) {
|
|
|
|
gctl_error(req, "Too few arguments.");
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
for (i = 0; i < nargs; i++) {
|
|
|
|
snprintf(param, sizeof(param), "arg%u", i);
|
2010-11-22 20:10:48 +00:00
|
|
|
name = gctl_get_ascii(req, "%s", param);
|
2007-09-23 07:34:23 +00:00
|
|
|
|
|
|
|
error = g_metadata_read(name, (u_char *) & tmpmd, sizeof(tmpmd),
|
|
|
|
G_VIRSTOR_MAGIC);
|
|
|
|
if (error != 0) {
|
|
|
|
fprintf(stderr, "Can't read metadata from %s: %s.\n",
|
|
|
|
name, strerror(error));
|
|
|
|
gctl_error(req,
|
|
|
|
"Not fully done (error reading metadata).");
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
virstor_metadata_decode((u_char *) & tmpmd, &md);
|
|
|
|
printf("Metadata on %s:\n", name);
|
|
|
|
virstor_metadata_dump(&md);
|
|
|
|
printf("\n");
|
|
|
|
}
|
|
|
|
}
|